Fish Lake Valley (Miocene of the United States)

Also known as UCMP V-2804; UCR RV-6304

Where: Esmeralda County, Nevada (38.0° N, 118.0° W: paleocoordinates 37.8° N, 113.9° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Esmeralda Formation, Clarendonian (13.6 - 10.3 Ma)

• other than biochronology, there is no particular evidence for the stratigraphic position of this locality relative to the Stewart Spring and Cedar Mountain faunas

•dates of Evernden et al. 1964: KA 480 - 11.1 (= 11.39) Ma, 25' above micromammals KA 499 - 11.4 (= 11.70) Ma, just below micromammals

•average is 11.545 Ma

•these dates are not discussed by Perkins et al. 1998

Environment/lithology: terrestrial

Size classes: macrofossils, mesofossils

Reposited in the UCMP

• material from UCMP V-2804 collected by Annie Alexander and Louise Kellogg in 1925

Primary reference: J. R. Macdonald and W. J. Pelletier. 1958. The Pliocene mammalian faunas of Nevada, U.S.A. Paleontologia, taxonomia y evolucion. Cuidad de Mexico: International Geological Congress, 1956 Report of the 7th Session 7:365-388 [J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18888: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Emmanuel Fara and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• Chiatovich Ranch is also known as Arlemont P.O.
Mammalia
 Carnivora - Felidae
? Pseudaelurus sp. Leidy 1858 cat
 Carnivora - Mustelidae
Leptarctinae indet.11 Gazin 1936 mustelid carnivore
"Esmeralda beds... 7 1/2 miles north of Chiatovich Ranch, Fish Lake Valley"
 Carnivora - Canidae
Epicyon cf. saevus8 Leidy 1858 bone-crushing dog
Leptocyon matthewi9 Tedford et al. 2009 canine
"UCR locality RV 7407"
 Perissodactyla - Equidae
Hypohippus nevadensis n. sp.5 Merriam 1913 anchitheriine horse
type of Merriam 1913 from UCMP loc. 2804
Pliohippus cf. tantalus Merriam 1913 horse
"Nannippus tehonensis" = Hipparion tehonense Merriam 1916 hipparionine horse
Hippotherium sp.1 Kaup 1832 hipparionine horse
 Perissodactyla - Rhinocerotidae
Teleoceras major6 Hatcher 1894 rhinoceros
 Artiodactyla - Camelidae
Protolabis coartatus3 Stirton 1929 camel
Aepycamelus cf. robustus1 Leidy 1858 camel
 Artiodactyla - Tayassuidae
"Prosthennops cf. niobrarensis" = Colbertchoerus niobrarensis12
"Prosthennops cf. niobrarensis" = Colbertchoerus niobrarensis12 Colbert 1935 peccary
 Artiodactyla - Antilocapridae
Paracosoryx cf. alticornis1 Frick 1937 pronghorn
 Theriamorpha - Plesiosoricidae
"Meterix latidens n. sp." = Plesiosorex latidens
"Meterix latidens n. sp." = Plesiosorex latidens Hall 1929 placental
 Theriamorpha - Soricidae
Alluvisorex chasseae7 Tedford 1961 shrew
 Theriamorpha - Talpidae
Mystipterus vespertilio n. sp. Hall 1930 mole
see Hall 1930d
 Theriamorpha - Erinaceidae
Metechinus nevadensis n. sp. Matthew 1929 hedgehog
see Matthew 1929a
 Rodentia - Castoridae
"Eucastor dividerus n. sp." = Prodipoides dividerus
"Eucastor dividerus n. sp." = Prodipoides dividerus Stirton 1935 beaver
from UCMP V-2804: see Stirton 1935
 Rodentia - Heteromyidae
"Perognathoides tertius n. sp." = Cupidinimus tertius, Perognathoides quartus n. sp., Diprionomys cf. parvus2
"Perognathoides tertius n. sp." = Cupidinimus tertius Hall 1930 rodent
Perognathoides quartus n. sp. Hall 1930 rodent
Diprionomys cf. parvus2 Kellogg 1910 rodent
 Rodentia - Cricetidae
Copemys loxodon10 Cope 1874 mouse
discusses continuing confusion among loxodon, longidens, kelloggae, and niobrariensis, all listed by Clark et al. 1964 except the last; loxodon is senior and is used tentatively
Copemys esmeraldensis n. sp.2 Clark et al. 1964 mouse
Peromyscus dentalis n. sp. Hall 1930 deer mouse
 Rodentia - Zapodidae
Macrognathomys nanus n. sp. Hall 1930 jumping mouse
see Hall 1930b
 Rodentia - Mylagaulidae
Hesperogaulus sp.4 Korth 1999 rodent
 Lagomorpha - Ochotonidae
Hesperolagomys galbreathi n. sp.2 Clark et al. 1964 pika
 Lagomorpha - Leporidae
Hypolagus fontinalis2 Dawson 1958 rabbit
Amphibia
 Salientia - Pelobatidae
"Scaphiopus alexanderi n. sp." = Scaphiopus (Spea) alexanderi13
"Scaphiopus alexanderi n. sp." = Scaphiopus (Spea) alexanderi13 Zweifel 1956 spadefoot toad
UCMP V-2804